1. Production of Sesame Oil
Group 20
Golden Oil

2. Emma Huynh
Preston Ji
Charlotte Ntim
Maame Sarpong
Team members
Project Summary
Design Decisions
Equipment Design
Design Norms
Progress
Obstacles

3. Outline A. Team members B. Summary C. Design decisions
D. Equipment design
E. Design norms
F. Progress
G. Obstacles

4. Golden Oil Project Produce sesame oil from sesame seed
Produce via mechanical pressing following
by solvent extraction
Project scale: 10,750 tons/year, which is 1% of worldwide sesame oil production
Team members
Project Summary
Design Decisions
Equipment Design
Design Norms
Progress
Obstacles

5. Process Flow Diagram
Team members
Project Summary
Design Decisions

6. Design Decisions 1. Production Scale 2. Source of Data
3. Harvest and Storage
4. Solvent Choice
5. Material Balance
6. Waste Processing
7. Operating Conditions
Team members
Project Summary
Design Decisions
Equipment Design
Design Norms
Progress
Obstacles

7. 1. Production Scale
Adjust the project scale from 62,000 tons/yr to 10,750 tons/yr
Team members
Project Summary
Design Decisions
Equipment Design
Design Norms
Progress
Obstacles

8. 2. Source of Data Have difficulty to find data/info in South Sudan
Data source is available in America
Team members
Project Summary
Design Decisions
Equipment Design
Design Norms
Progress
Obstacles

9. 3. Harvest and Storage Assume 1 harvest per year
8,000 hours of operation per year
Assume our products can be stored in bins/tanks large enough to hold 7 days of continuous operation
Team members
Project Summary
Design Decisions
Equipment Design
Design Norms
Progress
Obstacles

10. 4. Solvent We choose n-hexane as our solvent Team members
Project Summary
Design Decisions
Equipment Design
Design Norms
Progress
Obstacles

11. 5. Material Balance
Assume 49% of the oil is extracted via mechanical pressing and 49 % via chemical extraction
Total of 98% of the oil is obtained
Recycle ratio of hexane 20:1
Solvent to seed ratio 2.5:1
Team members
Project Summary
Design Decisions
Equipment Design
Design Norms
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Obstacles

12. 6. Waste Processing 6.1. Solid waste:
Rich in sugar and protein, good for animal feed
6.2. Fluid waste:
Hexane purge stream, burn in furnace
Team members
Project Summary
Design Decisions
Equipment Design
Design Norms
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13. 7. Operating Conditions 7.1. Temperature: 50 ~ 90 ℃
Close or below the normal boiling point of hexane (86 ℃)
7.2. Pressure: < 1 atm
Increase volatility of hexane for better separation
Reduce the risk of a hexane (flammable) leak
Team members
Project Summary
Design Decisions
Equipment Design
Design Norms
Progress
Obstacles

14. D. Equipment Design 1. Grinder 2. Leaching Tank
3. Hexane-Oil Separation
Design Decisions
Equipment Design
Design Norms

15. 1. Grinder 1.1. Solid processing → no simulation available
1.2. Heat of friction
A separate roaster
may not be necessary
Design Decisions
Equipment Design
Design Norms

16. 2. Leaching Tank 2.1. Original plan: CSTR + settler
A continuously stirred tank followed by a settler (or a cyclone if necessary)
2.2. Latest plan:
Crushed seed sent through showers of hexane
Easier separation between the phases
(ZFS plant tour)
Team members
Project Summary
Design Decisions
Equipment Design
Design Norms
Progress
Obstacles

17. 3. Hexane-Oil Separation
Problem: How do we model sesame oil?
3.1. Create hypothetical components
Build molecule with UNIFAC model
Input known properties
Estimate unknown properties
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Project Summary
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Equipment Design
Design Norms
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18. 3. Hexane-Oil Separation
3.2. Create component list
Hexane
Sesame oil → top 4 fatty acids (93%)
Water(?)
(Linoleic acid, oleic acid, stearic acid, palmitic acid)
Team members
Project Summary
Design Decisions
Equipment Design
Design Norms
Progress
Obstacles

19. 3. Hexane-Oil Separation
3.3. Recover oil from solvent
Multiple flash drums Distillation column
Design Decisions
Equipment Design
Design Norms

20. 3. Hexane-Oil Separation
3.3. Recover oil from solvent - simulation challenges
Multiple flash drums
Not enough surface area for good mass transfer
Cannot get hexane free oil
Distillation column
Must heat to the boiling point of oil
Does not converge due to lack of component properties
Best model: reboiler + large flash drum
Team members
Project Summary
Design Decisions
Equipment Design
Design Norms
Progress
Obstacles

21. Design Validation Consult with our supervisor and industrial advisor
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Project Summary
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Equipment Design
Design Norms
Progress
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22. Design Norms For this project, we will focus on Transparency
Stewardship
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Project Summary
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Equipment Design
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23. F. Progress 1. Mass balance 2. Cost estimate 3. Visited ZFS
Operating conditions
Equipment choice
4. Started simulation and modeling
Team members
Project Summary
Design Decisions
Equipment Design
Design Norms
Progress
Obstacles

24. G. Obstacles 1. UNISIM simulation - not behaving as expected
2. Solid handling system - limited knowledge
(Roaster, grinder, leaching, etc)
Team members
Project Summary
Design Decisions
Equipment Design
Design Norms
Progress
Obstacles